Scabrotrigonia, a victim of the end-Cretaceous extinction. (IMAGE)

University of Chicago

Scabrotrigonia, a victim of the end-Cretaceous extinction.

Caption

This lineage was widespread and abundant in the Late Cretaceous, but just a few species survive today off the coasts of Australia.

Credit

Image courtesy Smithsonian National Museum of Natural History

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please credit the Smithsonian Museum of Natural History

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